Bismarck Canvas, Inc.® created the Pro-Lok® Roll Tarp System: The Brand that Stands Above the Rest. Quality you can trust delivered at a FAIR price. Quality workmanship, made in the USA. Unique Aluminum End Cap design comes standard in all kits. Heavy-duty, durable Aluminum End Caps provide excellent tarp support. Lasting quality provides years of use. Variety of sizes available; standard 7 inch rise, 12 inch high-rise, radius wrap front and wrap rear. Wide widths are available to accommodate grain carts. Pro-Lok® Replacement tarps are available in any size. Call today to get a price for the tarp style and size you need!